Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGMC1995SUBURBAN K2500, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 129 (ENGINE CONTROLS - BASIC TESTING - 3.8L)C-4, BASIC IGNITION SYSTEM CHECKSHEI-EST DISTRIBUTORDISTRIBUTOR PICK-UP COIL SHORT & RESISTANCE CHECKS
1995 GMC Suburban K2500, 6.5 F
Distributor Pick-Up Coil Short & Resistance Checks
1995 GMC Suburban K2500, 6.5 FSECTION Distributor Pick-Up Coil Short & Resistance Checks
WARNING: This page is about a different car, the 1995 Pontiac Trans Sport, 1995 Oldsmobile Silhouette, and 1995 Chevrolet Lumina APV. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect pick-up coil leads from module. Using ohmmeter, check pick-up coil resistance. Connect ohmmeter to distributor housing and either pick-up coil lead (step 1 in illustration). See Fig 1 . Flex pick-up coil leads by hand to check fo r intermittent short to ground. If reading is not always infinite, replace pick-up coil.
- Connect ohmmeter between pick-up coil leads (step 2 in illustration). See Fig 1 . Check for intermittent open by flexing wire s and connectors. If resistance is not 500-1500 ohms, replace pick-up coil.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.